Answer:
rearrange them properly to get
x-y=7
-3x+y=12
( by elimination method)
x-y = 7
-3x+y=
(x+ –3x) + (–y+y) = (7+12)
-2x+0= 19
x= -9.5
from eqn(i)
x-y=7
-9.5 - y=7
-y=16.5
y= -16.5
Answer:
6
Step-by-step explanation:
6 is a multiple of three with only itself
Answer:
7y+5z+10
Step-by-step explanation:
7y+5z+10
Answer:
51.1 ≈ r
Step-by-step explanation:
"A bicycle wheel travels 321 in for each revolution"- means that 321 is the circumference of the wheel that is a circle.
C = 2· π· r
What is the radius of the wheel ?
321 = 2· π· r, divide both sides of the equation by 2 π
(321/2·π) = r , use calculator, solve and round the answer
51.1 ≈ r
Express all possible lengths for this scrap as a compound inequality will be L ≤ 24.
<h3>What is inequality?</h3>
Inequality is defined as an equation that does not contain an equal sign. Inequality is a term that describes a statement's relative size and can be used to compare these two claims.
To repair a leak a plumber needs a pipe that is within 3/4 of an inch of 32 inches.
⇒ 3/4 x 32
⇒ 24
He already has a 48-inch pipe.
Let the variable L represents the length of the extra (scrap) that is removed from the 48-inch pipe will be
Then express all possible lengths for this scrap as a compound inequality will be
L + 24 ≤ 48
L ≤ 48 - 24
L ≤ 24
More about the inequality link is given below.
brainly.com/question/19491153
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